diff options
Diffstat (limited to 'arch/sh/boards/mach-x3proto')
| -rw-r--r-- | arch/sh/boards/mach-x3proto/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/boards/mach-x3proto/gpio.c | 141 | ||||
| -rw-r--r-- | arch/sh/boards/mach-x3proto/ilsel.c | 26 | ||||
| -rw-r--r-- | arch/sh/boards/mach-x3proto/setup.c | 152 |
4 files changed, 300 insertions, 21 deletions
diff --git a/arch/sh/boards/mach-x3proto/Makefile b/arch/sh/boards/mach-x3proto/Makefile index 983e4551fec..0cbe3d02dea 100644 --- a/arch/sh/boards/mach-x3proto/Makefile +++ b/arch/sh/boards/mach-x3proto/Makefile @@ -1 +1,3 @@ obj-y += setup.o ilsel.o + +obj-$(CONFIG_GPIOLIB) += gpio.o diff --git a/arch/sh/boards/mach-x3proto/gpio.c b/arch/sh/boards/mach-x3proto/gpio.c new file mode 100644 index 00000000000..3ea65e9b56e --- /dev/null +++ b/arch/sh/boards/mach-x3proto/gpio.c @@ -0,0 +1,141 @@ +/* + * arch/sh/boards/mach-x3proto/gpio.c + * + * Renesas SH-X3 Prototype Baseboard GPIO Support. + * + * Copyright (C) 2010 - 2012 Paul Mundt + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/gpio.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/irqdomain.h> +#include <linux/io.h> +#include <mach/ilsel.h> +#include <mach/hardware.h> + +#define KEYCTLR 0xb81c0000 +#define KEYOUTR 0xb81c0002 +#define KEYDETR 0xb81c0004 + +static DEFINE_SPINLOCK(x3proto_gpio_lock); +static struct irq_domain *x3proto_irq_domain; + +static int x3proto_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + unsigned long flags; + unsigned int data; + + spin_lock_irqsave(&x3proto_gpio_lock, flags); + data = __raw_readw(KEYCTLR); + data |= (1 << gpio); + __raw_writew(data, KEYCTLR); + spin_unlock_irqrestore(&x3proto_gpio_lock, flags); + + return 0; +} + +static int x3proto_gpio_get(struct gpio_chip *chip, unsigned gpio) +{ + return !!(__raw_readw(KEYDETR) & (1 << gpio)); +} + +static int x3proto_gpio_to_irq(struct gpio_chip *chip, unsigned gpio) +{ + int virq; + + if (gpio < chip->ngpio) + virq = irq_create_mapping(x3proto_irq_domain, gpio); + else + virq = -ENXIO; + + return virq; +} + +static void x3proto_gpio_irq_handler(unsigned int irq, struct irq_desc *desc) +{ + struct irq_data *data = irq_get_irq_data(irq); + struct irq_chip *chip = irq_data_get_irq_chip(data); + unsigned long mask; + int pin; + + chip->irq_mask_ack(data); + + mask = __raw_readw(KEYDETR); + for_each_set_bit(pin, &mask, NR_BASEBOARD_GPIOS) + generic_handle_irq(irq_linear_revmap(x3proto_irq_domain, pin)); + + chip->irq_unmask(data); +} + +struct gpio_chip x3proto_gpio_chip = { + .label = "x3proto-gpio", + .direction_input = x3proto_gpio_direction_input, + .get = x3proto_gpio_get, + .to_irq = x3proto_gpio_to_irq, + .base = -1, + .ngpio = NR_BASEBOARD_GPIOS, +}; + +static int x3proto_gpio_irq_map(struct irq_domain *domain, unsigned int virq, + irq_hw_number_t hwirq) +{ + irq_set_chip_and_handler_name(virq, &dummy_irq_chip, handle_simple_irq, + "gpio"); + + return 0; +} + +static struct irq_domain_ops x3proto_gpio_irq_ops = { + .map = x3proto_gpio_irq_map, + .xlate = irq_domain_xlate_twocell, +}; + +int __init x3proto_gpio_setup(void) +{ + int ilsel, ret; + + ilsel = ilsel_enable(ILSEL_KEY); + if (unlikely(ilsel < 0)) + return ilsel; + + ret = gpiochip_add(&x3proto_gpio_chip); + if (unlikely(ret)) + goto err_gpio; + + x3proto_irq_domain = irq_domain_add_linear(NULL, NR_BASEBOARD_GPIOS, + &x3proto_gpio_irq_ops, NULL); + if (unlikely(!x3proto_irq_domain)) + goto err_irq; + + pr_info("registering '%s' support, handling GPIOs %u -> %u, " + "bound to IRQ %u\n", + x3proto_gpio_chip.label, x3proto_gpio_chip.base, + x3proto_gpio_chip.base + x3proto_gpio_chip.ngpio, + ilsel); + + irq_set_chained_handler(ilsel, x3proto_gpio_irq_handler); + irq_set_irq_wake(ilsel, 1); + + return 0; + +err_irq: + ret = gpiochip_remove(&x3proto_gpio_chip); + if (unlikely(ret)) + pr_err("Failed deregistering GPIO\n"); + +err_gpio: + synchronize_irq(ilsel); + + ilsel_disable(ILSEL_KEY); + + return ret; +} diff --git a/arch/sh/boards/mach-x3proto/ilsel.c b/arch/sh/boards/mach-x3proto/ilsel.c index b5c673c3933..95e34613951 100644 --- a/arch/sh/boards/mach-x3proto/ilsel.c +++ b/arch/sh/boards/mach-x3proto/ilsel.c @@ -1,20 +1,22 @@ /* - * arch/sh/boards/renesas/x3proto/ilsel.c + * arch/sh/boards/mach-x3proto/ilsel.c * * Helper routines for SH-X3 proto board ILSEL. * - * Copyright (C) 2007 Paul Mundt + * Copyright (C) 2007 - 2010 Paul Mundt * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/bitmap.h> #include <linux/io.h> -#include <asm/ilsel.h> +#include <mach/ilsel.h> /* * ILSEL is split across: @@ -64,16 +66,18 @@ static void __ilsel_enable(ilsel_source_t set, unsigned int bit) unsigned int tmp, shift; unsigned long addr; + pr_notice("enabling ILSEL set %d\n", set); + addr = mk_ilsel_addr(bit); shift = mk_ilsel_shift(bit); pr_debug("%s: bit#%d: addr - 0x%08lx (shift %d, set %d)\n", __func__, bit, addr, shift, set); - tmp = ctrl_inw(addr); + tmp = __raw_readw(addr); tmp &= ~(0xf << shift); tmp |= set << shift; - ctrl_outw(tmp, addr); + __raw_writew(tmp, addr); } /** @@ -92,8 +96,10 @@ int ilsel_enable(ilsel_source_t set) { unsigned int bit; - /* Aliased sources must use ilsel_enable_fixed() */ - BUG_ON(set > ILSEL_KEY); + if (unlikely(set > ILSEL_KEY)) { + pr_err("Aliased sources must use ilsel_enable_fixed()\n"); + return -EINVAL; + } do { bit = find_first_zero_bit(&ilsel_level_map, ILSEL_LEVELS); @@ -140,11 +146,13 @@ void ilsel_disable(unsigned int irq) unsigned long addr; unsigned int tmp; + pr_notice("disabling ILSEL set %d\n", irq); + addr = mk_ilsel_addr(irq); - tmp = ctrl_inw(addr); + tmp = __raw_readw(addr); tmp &= ~(0xf << mk_ilsel_shift(irq)); - ctrl_outw(tmp, addr); + __raw_writew(tmp, addr); clear_bit(irq, &ilsel_level_map); } diff --git a/arch/sh/boards/mach-x3proto/setup.c b/arch/sh/boards/mach-x3proto/setup.c index a340492087f..d682e2b6a85 100644 --- a/arch/sh/boards/mach-x3proto/setup.c +++ b/arch/sh/boards/mach-x3proto/setup.c @@ -1,9 +1,9 @@ /* - * arch/sh/boards/renesas/x3proto/setup.c + * arch/sh/boards/mach-x3proto/setup.c * * Renesas SH-X3 Prototype Board Support. * - * Copyright (C) 2007 - 2008 Paul Mundt + * Copyright (C) 2007 - 2010 Paul Mundt * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive @@ -15,7 +15,15 @@ #include <linux/io.h> #include <linux/smc91x.h> #include <linux/irq.h> -#include <asm/ilsel.h> +#include <linux/interrupt.h> +#include <linux/input.h> +#include <linux/usb/r8a66597.h> +#include <linux/usb/m66592.h> +#include <linux/gpio.h> +#include <linux/gpio_keys.h> +#include <mach/ilsel.h> +#include <mach/hardware.h> +#include <asm/smp-ops.h> static struct resource heartbeat_resources[] = { [0] = { @@ -58,17 +66,20 @@ static struct platform_device smc91x_device = { }, }; +static struct r8a66597_platdata r8a66597_data = { + .xtal = R8A66597_PLATDATA_XTAL_12MHZ, + .vif = 1, +}; + static struct resource r8a66597_usb_host_resources[] = { [0] = { - .name = "r8a66597_hcd", .start = 0x18040000, .end = 0x18080000 - 1, .flags = IORESOURCE_MEM, }, [1] = { - .name = "r8a66597_hcd", /* Filled in by ilsel */ - .flags = IORESOURCE_IRQ, + .flags = IORESOURCE_IRQ | IRQF_TRIGGER_LOW, }, }; @@ -78,11 +89,17 @@ static struct platform_device r8a66597_usb_host_device = { .dev = { .dma_mask = NULL, /* don't use dma */ .coherent_dma_mask = 0xffffffff, + .platform_data = &r8a66597_data, }, .num_resources = ARRAY_SIZE(r8a66597_usb_host_resources), .resource = r8a66597_usb_host_resources, }; +static struct m66592_platdata usbf_platdata = { + .xtal = M66592_PLATDATA_XTAL_24MHZ, + .vif = 1, +}; + static struct resource m66592_usb_peripheral_resources[] = { [0] = { .name = "m66592_udc", @@ -103,20 +120,134 @@ static struct platform_device m66592_usb_peripheral_device = { .dev = { .dma_mask = NULL, /* don't use dma */ .coherent_dma_mask = 0xffffffff, + .platform_data = &usbf_platdata, }, .num_resources = ARRAY_SIZE(m66592_usb_peripheral_resources), .resource = m66592_usb_peripheral_resources, }; +static struct gpio_keys_button baseboard_buttons[NR_BASEBOARD_GPIOS] = { + { + .desc = "key44", + .code = KEY_POWER, + .active_low = 1, + .wakeup = 1, + }, { + .desc = "key43", + .code = KEY_SUSPEND, + .active_low = 1, + .wakeup = 1, + }, { + .desc = "key42", + .code = KEY_KATAKANAHIRAGANA, + .active_low = 1, + }, { + .desc = "key41", + .code = KEY_SWITCHVIDEOMODE, + .active_low = 1, + }, { + .desc = "key34", + .code = KEY_F12, + .active_low = 1, + }, { + .desc = "key33", + .code = KEY_F11, + .active_low = 1, + }, { + .desc = "key32", + .code = KEY_F10, + .active_low = 1, + }, { + .desc = "key31", + .code = KEY_F9, + .active_low = 1, + }, { + .desc = "key24", + .code = KEY_F8, + .active_low = 1, + }, { + .desc = "key23", + .code = KEY_F7, + .active_low = 1, + }, { + .desc = "key22", + .code = KEY_F6, + .active_low = 1, + }, { + .desc = "key21", + .code = KEY_F5, + .active_low = 1, + }, { + .desc = "key14", + .code = KEY_F4, + .active_low = 1, + }, { + .desc = "key13", + .code = KEY_F3, + .active_low = 1, + }, { + .desc = "key12", + .code = KEY_F2, + .active_low = 1, + }, { + .desc = "key11", + .code = KEY_F1, + .active_low = 1, + }, +}; + +static struct gpio_keys_platform_data baseboard_buttons_data = { + .buttons = baseboard_buttons, + .nbuttons = ARRAY_SIZE(baseboard_buttons), +}; + +static struct platform_device baseboard_buttons_device = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &baseboard_buttons_data, + }, +}; + static struct platform_device *x3proto_devices[] __initdata = { &heartbeat_device, &smc91x_device, &r8a66597_usb_host_device, &m66592_usb_peripheral_device, + &baseboard_buttons_device, }; +static void __init x3proto_init_irq(void) +{ + plat_irq_setup_pins(IRQ_MODE_IRL3210); + + /* Set ICR0.LVLMODE */ + __raw_writel(__raw_readl(0xfe410000) | (1 << 21), 0xfe410000); +} + static int __init x3proto_devices_setup(void) { + int ret, i; + + /* + * IRLs are only needed for ILSEL mappings, so flip over the INTC + * pins at a later point to enable the GPIOs to settle. + */ + x3proto_init_irq(); + + /* + * Now that ILSELs are available, set up the baseboard GPIOs. + */ + ret = x3proto_gpio_setup(); + if (unlikely(ret)) + return ret; + + /* + * Propagate dynamic GPIOs for the baseboard button device. + */ + for (i = 0; i < ARRAY_SIZE(baseboard_buttons); i++) + baseboard_buttons[i].gpio = x3proto_gpio_chip.base + i; + r8a66597_usb_host_resources[1].start = r8a66597_usb_host_resources[1].end = ilsel_enable(ILSEL_USBH_I); @@ -131,15 +262,12 @@ static int __init x3proto_devices_setup(void) } device_initcall(x3proto_devices_setup); -static void __init x3proto_init_irq(void) +static void __init x3proto_setup(char **cmdline_p) { - plat_irq_setup_pins(IRQ_MODE_IRL3210); - - /* Set ICR0.LVLMODE */ - ctrl_outl(ctrl_inl(0xfe410000) | (1 << 21), 0xfe410000); + register_smp_ops(&shx3_smp_ops); } static struct sh_machine_vector mv_x3proto __initmv = { .mv_name = "x3proto", - .mv_init_irq = x3proto_init_irq, + .mv_setup = x3proto_setup, }; |